Using the normal distribution, it is found that the correct option is:
In a <em>normal distribution</em> with mean and standard deviation , the z-score of a measure X is given by:
- It measures how many standard deviations the measure is from the mean.
In this problem:
- The mean on the Wechsler Scale is of 100, hence .
- The standard deviation is of 17, hence .
- Brianna had an score of 117, hence
Then:
Hence, the option d is correct.
To learn more about the normal distribution, you can check brainly.com/question/24663213
Answer: x = 10
Step-by-step explanation: 7x10 = 70
Answer:
235
Step-by-step explanation:
The square root of 55,225 is = 235
because,
235 x 235 = 55,225
Answer:
<em>56 adult tickets were sold</em>
Step-by-step explanation:
Ratio of ticket sold to Children and adult is in the ratio 4 : 7
Total ratio = 4 +7 = 11
Ratio of adult = 7
Total ticket sold = 88
Number of adult tickets sold = Ratio of adult/Total ratio * Total ticket sold
Number of adult tickets sold = 7/11 * 88
Number of adult tickets sold = 7 * 8
Number of adult tickets sold = 56 tickets
<em>Hence 56 adult tickets were sold</em>